叉车驱动桥中减速器的作用是什么？

A. Clearing an alert sends the alert to the alert history.
B. Response actions cannot be specified with server-generated alerts.
C. The nonthreshold alerts appear in the DBA_OUTSTANDING_ALERTS view.
D. Server-generated alerts notify the problems that cannot be resolved automatically and requireadministrators to be notified.

A. 指令部件
B. 累加器
C. 时序部件
D. 微操作控制器件